Right, it's "just" expressions and tuple deforming right now. Especially the former required significant refactoring (landing in v10), but that's nothing agains

Right, it's "just" expressions and tuple deforming right now. Especially the former required significant refactoring (landing in v10), but that's nothing against the refactoring required to do proper whole query compilation. I'm working on the necessary changes (have posted prototype), which have independent advantages as well. There's planning logic to decide whether JIT is worthwhile, but that's probably the weakest part right now.